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placenta

[pluh-sen-tuh] / pləˈsɛn tə /


NOUN
membrane
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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While most common infections do not directly reach a developing fetus, these pathogens can sometimes cross the placenta and cause a congenital infection.

From Science Daily ● Sep. 23, 2026

They also found the mother’s placenta and umbilical cord in a trash bag, according to the sheriff’s office.

From Los Angeles Times ● Sep. 18, 2026

"I borrowed a razor blade to cut the placenta," she told AFP.

From Barron's ● Aug. 12, 2026

All newborns lack vitamin K. No matter how much vitamin K a mother consumes, it doesn’t sufficiently pass through the placenta, and breast milk contains only small amounts.

From Salon ● May 7, 2026

He detected no respiratory infection but prescribed shots of liver and placenta extract, a novel therapy for weakened immune systems.

From "Big Science" by Michael Hiltzik

After parturition, placentae and bloody discharge often are in evidence in the vaginal canal.

From Aspects of Reproduction and Development in the Prairie Vole (Microtus ochrogaster) by Henry S. Fitch

One point makes the above view more probable in Acropera than in other cases, viz. the presence of rudimentary placentae or testae, for I cannot hear that these have been observed in the male plants.

From More Letters of Charles Darwin — Volume 2 by Sir Francis Darwin

Yet when I call to mind the state of the placentae in A. luteola, I am astonished that they should produce ovules.

From More Letters of Charles Darwin — Volume 2 by Sir Francis Darwin

As I traced the placentae upwards, the ovules appeared, becoming gradually more abundant towards its apex.

From More Letters of Charles Darwin — Volume 2 by Sir Francis Darwin

In making longitudinal sections of the fertilised ovary before mentioned, I found the basal portion entirely destitute of ovules, their place being substituted by transparent cellular ramification of the placentae.

From More Letters of Charles Darwin — Volume 2 by Sir Francis Darwin

She was carrying an unknown number of human placentas in a plastic bag when she was picked up, according to the police.

From BBC ● Sep. 19, 2025

The examples included an NPR story on eating human placentas, a practice that has been around for decades, and a 2017 documentary about a transgender teen on PBS.

From Los Angeles Times ● May 2, 2025

As we look across the mammal groups, big-brained species correlate frequently with invasive placentas, like our own.

From Slate ● Sep. 7, 2024

For this purpose, the team used fully functional human placentas that were made available after planned caesarean sections.

From Science Daily ● Jun. 6, 2024

In 2006, some seven hundred new mothers found out that doctors had taken their placentas without consent to test for abnormalities that might help the hospital defend itself against future lawsuits over birth defects.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot


Vocabulary lists containing placenta

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